Pneumatic agitator for ice-making apparatus.



F. L. BERRY. PNEUMATIGAGITATOR FOR 10E MAKING APPARATUS. APPLIOATION FILED SEPT. 26. 1910. RENEWED NQVJZ, 1913.

1,113,298, Patented Oct. 13, 1914.

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FRANK L. BERRY, OF SPOKANE, WASHINGTON.

PNEITMATIC AGITA'I'dB. FOR ICE-MAKING APPARATUS.

Specification of Letters Patent.

Patented Oct. 13, 1914.

Application illed september 28, 1910, Serial No. 584,188. RcnewedRovember '12, 1913. Serial No. 800,662.

To all whom it ma concern:

Be it known t at I, FRANK L. BERRY, a citizen of the United States, residhig at Spokane, in the county of Spokane and State of Washington, have invented certain new and useful Improvements in Pneumatic Agitators for Ice-Making Apparatus, of which the following is a specification.

This invention pertains to pneumatic agitators for artificially freezing ice, and has for its purpose to provide a more efficient means of keeping the water agitated during the freezing process and of removing the mechanical construction whereby the water is kept agitated, after the freezing process is complete.

Otherpurposes and objects will be hereinafter described and shown in theaccompanying drawings in whichigure 1, is a transverse vertical sectional view of my improved pneumatic agitator. Fig. 2 is a combinedfront elevation and longitudinal sectional view of the improved construction for a 'tation purposes Fig. 3 is an elevation of t e construction s own in Fig. 2 set at an angle of forty-five degrees, and Fig. 4, is an elevation of the tube used for thawing purposes, together with connections and adapted for insertion in the inner tube shown in Fig. 2.

The water can H is incased by the cover a, timbers 1), side walls d, and bottom f. The ammonia coils c are arranged in the usual manner within the supports d. A bottom e is arranged for the can H.

A combined cross-bar and casing A is adapted for setting across the to of the can H and for being held rigid in t at position. Carrier pins E adapted for disappearing within cavities in the ends of the com bined cross-bar and casing A are regulated by means of the coil s rings D and releasing pins K operating in the angular slots L. In Fig. 2 the line Z-Z indicates the dividing line between the elevation and sectioned portions, the former being to the left and the latter to the right thereof. An air tube B extends downward at right angles with the combined cross-bar and easing A and connects with the air inlet J, has perforations h, z, j, k, l, m, n, p, r, a, down the sides thereof and an opening M at the bottom thereof. A tube C reaches from the top of the com bined crossbar and casing A, extends down- .ward within the tube B to a point near the bottom thereof and is open at the top N thereof and closed at the bottom. A cavity 0 is left between the outer tube B and inner one C. The thawing tube R is notched S at the bottom, has a collar Q, near the top and a hose connection P at the to thereof. A hose G connects with'the air. in ct J leading to the cavity 0. The air supply pipe F connects with the hose G.

In the practical a plication of the invention, the can H .is lled with water to the line I, air is turned into the pipe F, passes through the hose G into the cavity .0 and passes out through the perforations h, z, j, Ac. Z, m, n, p, 1', s and the opening M whereby the water in the can is kept agitated. The freezing process begins at the bottom of the can and extends upward. The tube B is frozen into the water, gradually from the lower end up. After the lower end is frozen in and the opening M no longer gives vent to the air, t .e same passes through the perforations in the tube along the sides thereof, thereby keeping what water that is not frozen in a state of agitation until it is frozen to the surface. After the freezing process is completethe tube B- is th'awed from the ice by heat passed through the tube R after the same has been inserted into the inner tube C at the openin N, the heat passing out at the notch S at t e bottom thereof. By forcing back the carrier pins E the tubes may thenbe removed from the ice block. The tube C provides an open passage for the insertion of the thawing tube R.

The carrier pins E are held into the cavities in the combined cross-bar and easing A by the ,pins K attached thereto and *thrown into the lower ends of the slots L while the apparatus is attached to the can as shown in Fig. 1, and thrown out as shown in Fig. 2 by the reverse process, so as to afiord ameans forremovi'ng the parts.

Having thus described my invention, what I'claim as new and useful and desire to secure by Letters-Patent, is:

In a pneumatic a apparatus, the comblnation with a can-refrigerating receptacle, of a combined crossbar and casing three vertical tubes one within the other extending downwardly from the cross bar into the can-refrigerating receptacle, the outside'tube being perforated on sides and. bottom and open at the top and In testimon whereof I aflix my signature, adnpteg for connazction vgithh an air supply in presence 0 two witnesses.

pipe, t e interme iate tu e avin an open 1 top and cldsed sides and bottom? and the FRANK BERRY inner tube having closed sides and openings" Witnesses:

at the bottom and open at the top and adapt- C. B. BRADFORD,

ed for connection with a heat supply pipe. GERTRUDE ACOAM. 

